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So is there any alternative that will work the same in ros-melodic?

You can still build universal_robot on Melodic in a Catkin workspace.

See #q252478 for the general procedure (but of course use melodic instead of kinetic).

So is there any alternative that will work the same in ros-melodic?

You can still build universal_robot on Melodic in a Catkin workspace.

See #q252478 for the general procedure (but of course use melodic instead of kinetic).

Edit:

sushilsundaram@cmu:~/Documents/ros_course/hrwros_ws/src/hrwros_support/urdf$ rosdep check -i --from-paths $HOME/Documents/ros_course/hrwros_ws/src
All system dependencies have been satisfied
ERROR[hrwros_support]: Cannot locate rosdep definition for [turtlebot_description]
    rosdep key : turtlebot_description
    OS name    : ubuntu
    OS version : bionic
    Data: <no data>

This would seem to be only one dependency (instead of "far too many").

The problem here is that hrwros_support depends on turtlebot_description which hasn't been released into Melodic yet.

It has only very few dependencies (looking at the wiki page), so you could try adding turtlebot_description (together with its dependencies) in your workspace and fulfill the dependency requirements that way.

Do note though: as far as I know, the packages in HRWROS were specifically created for Kinetic, so the problems that you're running into getting this to work on Melodic are somewhat expected. There is also no guarantee that after you get your workspace to build, the whole setup will actually work.